The Fire head to Philadelphia on Saturday night to take on the Union for the second time in seven days (Coverage begins 6pm CT on My50). The Men in Red dropped a heart breaker 1-0 at home last week despite creating a number of chances. Philly played LA at home at midweek and lost 4-1 after a second half defensive collapse. Here are some things to look out for from a tactical perspective.

Rolfe and Nyarko up top – repeat the first half of last week

In the first half against the Union at Toyota Park last week Patrick Nyarko terrorized the Philly defense, running at them with pace and creating a number of opportunities.

Rolfe and Nyarko combined well and were very close to each other on the pitch. The movement of the pair dragged the Philly center backs out leaving massive pockets of space in behind for the Fire to exploit.

WATCH: Nyarko, Berry Preview Philly

This happened on a number of occasions and NBC analyst Kyle Martino pointed it out over and over again on the broadcast.

In the second half however, the duo were too far apart and then Rolfe was moved out wide later. It goes without saying they’ll need to play closer together on Saturday.

When Rolfe and Nyarko force the center backs out of position, players like Dilly Duka and Joel Lindpere need to do a better job of tucking in and taking advantage of that space, something the team didn’t do enough of last week.

Philly were unable to deal with the pace of Nyarko last week and the Fire should look to get the ball to the Ghanaian as much as possible again Saturday.

Kleberson – keeping an eye on the “unknown” Brazilian

In Philly’s game against the Galaxy Wednesday night the Union gave a first start to Kleberson in midfield. In the first half, LA was unable to deal with his movement and defense-splitting passes.

Kleberson got forward constantly to help out Jack McInerney and Sebastian Le Toux in the attack and was allowed two or three shots from just outside the box. He also dropped deep and found the strikers with some brilliant through balls.

In the second half, LA was a lot tighter on the Brazilian and he was less effective. Though he may not be fit enough to play the entire 90 minutes against the Fire, I would expect him to start after his excellent full debut against LA.

Logan Pause and either Daniel Paladini or Jeff Larentowicz must track Kleberson's runs and be wary of balls played in behind. Logan did a fantastic job of cutting out through balls in last weekend’s match and the Fire will need a similar effort from the captain on Saturday, especially if Kleberson gets the start.

Focusing on Philly’s left side – opportunities for Duka and Thompson

I spoke last week about the weaknesses of Philly defender Raymon Gaddis who filled in on the right for the suspended Sheanon Williams last weekend. Against LA on Wednesday night, Gaddis returned to left back and was again caught too far forward on a number of occasions.

On the one hand, Gaddis and Keon Daniel combine very well in the attack and are certainly a threat but both players fail to track back defensively when the Union turns the ball over.

On a number of occasions on Wednesday night Bakary Soumare had to come over to almost the left wing to cover for Gaddis who was nowhere to be found. LA took full advantage of this, attacking down Gaddis’ side for most of the match.

Against Philly last weekend, right back Wells Thompson looked somewhat reluctant to come forward despite the fact that Dilly Duka was constantly coming inside and leaving space for Wells to run into. Both Thompson and Duka should be looking to attack Gaddis at every opportunity on Saturday night.

Prediction: 3-1 Fire with goals from Nyarko, Rolfe and Lindpere

Stephen Piggott is a contributor to Chicago-Fire.com. Follow him on Twitter @Irish_Steve.

The Fire head into Saturday afternoon’s game against the Union (12:30pm CT on NBC Sports Network) on the back of a much-needed bye week after the tough loss in Montreal the week prior.

Philly tied 2-2 against lowly Seattle last time out and are set to be missing a few defenders due to injury and suspension. Both teams play each other twice over the next seven days. Here are some things to look for from a tactical perspective.

Philly’s makeshift back line – Fire must take advantage - part 1

The Union come into this game missing starting right back Sheanon Williams and it appears former Fire player Bakary Soumare will get the start at center back for the first time all season.

WATCH: Match Preview

This major reshuffle combined with the Fire being the home team should mean Frank Klopas’ side will be set up to attack Philly whenever possible. Williams is a loss on the right, not only for his defensive play but also his long throw ability which can be used as an offensive threat.

Filling in for Williams should be usual left back Raymon Gaddis. Gaddis looked particularly uncomfortable against New England in the Union’s last away match in April, with the youngster getting caught out by balls in behind on a few occasions.

He was also exposed when put under pressure. The Revs wingers had luck getting the ball in the box from Gaddis’ side and with this in mind, I expect to see Joel Lindpere and Gonzalo Segares getting forward and attacking Gaddis whenever possible.

Philly’s makeshift back line – Fire must take advantage - part 2

Ironically, last season’s match against the Union saw Bakary Soumare play his first and only game of the 2012 season for the Union. In that match, the Fire looked to get in 1v1 situations with the rusty defender and it paid off, with MacDonald beating Soumare before crossing for a Chris Rolfe tap in goal. This weekend’s game plan should be no different with Soumare not playing in a match since the game last August.

The Men in Red will also look to force Soumare out of the middle to cover on the outside, something no centerback likes to do. Presumed starting wingers Patrick Nyarko and Joel Lindpere will be relishing 1v1 opportunities with the big defender.

Another area to test Soumare will be in the air. New England was able to win the ball in the aerial battle on numerous crosses into the Philly box, partially because of the hesitancy of goalkeeper Zac MacMath to come and challenge them.

A new center back pairing combined with a sometimes hesitant goalkeeper can lead to defensive errors and one such error could be decisive on Saturday afternoon.

WATCH: Athletico Coaching Corner

Stopping the Philly attack - be ready for different combinations

When one looks at the Philly attack this season, it is easy to get distracted by the exploits of 20-year-old Jack McInerney who has notched six goals already for the Union this season.

He picked up April’s Player of the Month award and is playing the best soccer of his young career. Beyond McInerney, the Union have three excellent strikers who bring different playing styles to the table.

Veteran Conor Casey has played up front with McInerney in recent matches and has combined well with the man 11 years his junior. Both strikers are very fluid, dropping deep, moving out to the wing or playing in the advanced striker role and switching at a moment's notice.

It is much easier to prepare for what you presume to be the starting strikers will be. The challenge in Saturday's game will be the adjustments the coaching staff make if and when the Union decide to bring on some attacking substitutions.

Antoine Hoppenot and Sebastian Le Toux have started from the bench in recent matches but both have a tendency to make a big impact once brought on. Le Toux is very good with the ball at his feet and he can easily play in the second striker role, allowing McInerney to permanently move higher up the pitch.

Hoppenot scored four goals off the bench last season and has come off the bench in all but one game this season. If Le Toux does come on, dropping presumed center-mid starter Daniel Paladini a bit deeper to reduce the space Le Toux has to operate in is an option.

In-game adjustments are not often talked about but can often be the difference between three points and one.

The 2013 MLS campaign kicks off today and the All-In Podcast crew has made their picks for the weekend matches... We'll tally these throughout the season and be sure to point out who does the worst every week on the Podcast...

Major League Soccer today released the final list of players eligible for Stage Two of the MLS Re-Entry process to take place via teleconference Friday afternoon at 2pm CT.

Midfielder Corben Bone, defender Dan Gargan and goalkeeper Jay Nolly remained on the list from the Fire after passing through the Stage One draft last Friday. Of course the Fire were the only team to select a player in that draft, picking Brazilian forward Maicon Santos.

The Stage Two draft typically has more activity as teams who select players on Friday can negotiate their salaries. In Stage Two, teams cannot select their own players until after all 18 other teams have passed on them.

Players that pass through Friday's draft without getting picked are free to sign with any MLS team on a first-come, first-served basis. If you're at all still confused, I explained the entire Re-Entry Process in this blog last Friday.

The list of the 49 eligible players for Re-Entry is below. Salary numbers are from the most recent report by the MLS Players Union.

This is probably a weaker Re-Entry Field than we've seen in the two previous versions. Given the three players the Fire have exposed to the draft and considering the moves made so far this offseason (re-signing Arne Friedrich and Gonzalo Segares; acquiring Maicon Santos), who, if anyone would you want to see the Fire take in Stage Two tomorrow?

Saturday night’s flat performance at New England combined with results in New York, D.C. and Houston have put the Fire in a precarious position going into this weekend's regular season finale vs. United. With all five playoff teams now known, the result for the Men in Red means the team could literally still be seeded anywhere from second to fifth in the East come Sunday morning…

With only one regular season game left, this will be the last edition of Playoff Math for 2012 where I look at each team's best and worst case scenarios and potential seedings. Enjoy!

The Rundown: Things have worked pretty well for KC heading into the playoffs. Saturday night they went and earned a second result in New York this season and combined with the Fire’s failure at New England, have nearly locked down the top spot in the East. At the very least, they'll finish second.

The Best Case: All they need to do is earn a draw in their final game against Philadelphia to take the top seed.

The Worst Case: A loss to Philly at midweek combined with a D.C.win over the Fire would push Sporting down to second based on the Goals For tiebreaker.

Beyond just being a solid team, Sporting have more than earned their position in the table by being smart about how they’ve earned results in difficult places to play.

The Rundown: D.C. was the biggest mover of the night and did it all in dramatic fashion by coming back from two deficits to eventually down the Columbus 3-2 behind Lewis Neal’s stoppage time strike. The win propelled United past the Fire and into second, qualified them for their first postseason berth since 2007 all the while helping to end the Crew’s postseason hopes.

The Best Case: A win Saturday against the Fire combined with a Sporting loss to Philadelphia would push United to first in the East. They could still lock down second on Saturday with just a draw against Chicago.

The Worst Case: A loss to the Fire and a New York win over Philadelphia would push D.C. to fourth and force them to host the Eastern Conference play-in game on October 31 or November 1.

The Rundown: After winning seven of eight in late summer and fall, the Men in Red have dropped their last three of four. There is reason to be nervous but be glad the team is home and can still control their own destiny as it comes to earning a higher seed.

The Best Case: All it would take for the Fire to lock up second in the East is a win at home against D.C. on Saturday.

The Worst Case: New York will end its match with Philadelphia a half hour before kickoff at Toyota Park -- If the Red Bulls win and the Fire lose or draw against D.C. the team will at least be condemned to fourth place.

Then the team will point its eyes to Denver where Colorado hosts Houston (8pm CT) in the final match of the 2012 MLS regular season – if the Dynamo win with a Fire loss against DC, the Men in Red will fall to fifth and open up the postseason at Houston. If the Fire draw against D.C., they’ll remain fourth regardless of what happens in Colorado.

The Rundown: New York will be disappointed to not have done more against Sporting KC in two huge home games towards the end of the season but will be happy to go into the final weekend with a playoff berth locked.

The Best Case: Because the Fire and United play and are already ahead of New York, there is no way for Red Bull to finish higher than third. With that in mind, all they need to do is defeat Philadelphia to lock in third place and avoid the play-in game.

The Worst Case: A draw or less to Philadelphia and then Red Bull will also be watching the Houston/Colorado match closely that night. A Houston win would mean the Dynamo would at the very least host New York in the play-in game, while a draw or loss would mean Red Bull would host the Dynamo.

The Rundown: Houston’s 3-1 win over Philadelphia Saturday night combined with D.C.’s victory over Columbus clinched the 2011 MLS Cup finalists a place back in the playoffs. Because of their appearance in last year’s championship match, the Dynamo also have to juggle the final group game of CONCACAF Champions League play this Wednesday when they welcome Honduran side Olimipa to BBVA Compass Stadium.

Luckily for the Dynamo, they need only a draw in the game to ensure advancement to the next round ahead of having to close out the regular season and fight for positioning in the East with a match at altitude in Colorado.

The Best Case: The Dynamo could finish as high as third in the East if both New York and Chicago lose their games earlier in the day and Houston defeats Colorado.

The Worst Case: The Fire and Red Bull both win their earlier matches condemning the Dynamo to fifth and rendering the game that night at Colorado meaningless. In that case, Houston would travel to D.C. United for the play-in game.